LTC2852 Linear Technology, LTC2852 Datasheet - Page 12

• Manufacturer Part Number: LTC2852
• Description: 3.3V 20Mbps RS485/RS422 Transceivers
• Manufacturer: Linear Technology

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APPLICATIONS INFORMATION
LTC2850/LTC2851/LTC2852
TYPICAL APPLICATIONS
12
TE = 3.3V
(RS485/RS422 Standard Shown in Solid Line)
100
10k
Figure 14. Cable Length vs Data Rate
10
1k
10k
100k
D
R
MAX DATA RATE
DATA RATE (bps)
RS485/RS422
LTC2854
Multi-Node Network with End Termination Using the LTC2850 and LTC2854
1M
LTC2851/LTC2852
MAX DATA RATE
10M
Failsafe “0” Application (Idle State = Logic “0”)
LTC2850/
RO
DI
285012 F14
R
100M
I
2
I
1
D
V
LTC2850
CC
100k
is determined by resistive losses in the cable. The down-
ward sloping region represents limits in distance and
data rate due to AC losses in the cable. The solid vertical
line represents the specifi ed maximum data rate in the
RS485/RS422 standards. The dashed lines at 20Mbps
show the maximum data rates of the LTC2850, LTC2851,
and LTC2852.
D
R
LTC2850
R
B
A
285012 TA02
“A”
“B”
D
LTC2850
LTC2854
R
285012 TA03
D
TE = 3.3V
285012fc